so the shooter is a much bigger tip of the iceberg in loneliness and rejection and most people get past it and go on past high school, but those who suffer a particularly, treatment form of mental illness take every slight as a magnified catastrophe and it means something more serious to them than to the ordinary kid that gross out of it and doesn't enjoy it either. >> is there a threshold or an age if it's not dealt with at that time that this person will only get worse and it will fester and turn into something like this, a violent rampage? >> we know these mental disturbances that often characterize shooters begin in adolescence and they're very difficult to identify at that age, but if they manage to make it to their 20s it becomes a more fluid form that we are able to identify and that's one of the hardest things about this particular shooting and once someone gets beyond high school where we see them in a social setting it could be much harder. >> katherine newman, appreciate it. >> robert f. kennedy's daughter weighs in on the gun control debate and it was in 1968 robert kennedy